Banned IPs in Django form validation

Question

I am trying to validate a form, such that if IP of user (request.META['REMOTE_ADDR']) is in a table BlockedIPs, it would fail validation. However I don't have access to request variable in Form. How do I do it? Thanks.

Answer 1

Make it available to your form by overriding __init__ so it can be passed in during construction (or you could just pass the IP itself):

from django import forms

class YourForm(forms.Form)
    # fields...

    def __init__(self, request, *args, **kwargs):
        self.request = request
        super(YourForm, self).__init__(*args, **kwargs)

    # validation methods...

Now you just need to pass the request object as the first argument when initialising the form and your custom validation methods will have access to it through self.request:

if request.method == 'POST':
    form = YourForm(request, request.POST)
    # ...
else:
    form = YourForm(request)
# ...